package com.learn.netty.example;

import io.netty.bootstrap.Bootstrap;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelOption;
import io.netty.channel.EventLoopGroup;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;

/**
 * Created by dongpengfei
 * Date 16/6/1
 * Time 下午3:14
 */

public class TimeClient {

    public void connect(int port, String host) throws  Exception{
        EventLoopGroup group = new NioEventLoopGroup();
        try{
            Bootstrap b = new Bootstrap();
            b.group(group).channel(NioSocketChannel.class)
                    .option(ChannelOption.TCP_NODELAY, true)
                    .handler(new ChannelInitializer<SocketChannel>() {
                        @Override
                        protected void initChannel(SocketChannel ch) throws Exception {
                            ch.pipeline().addLast(new TimeClientHandler());
                        }
                    });
            //发起异步链接操作
            ChannelFuture f = b.connect(host, port).sync();
            //等待客户端链接关闭
            f.channel().closeFuture().sync();
        }finally {
            group.shutdownGracefully();
        }


    }


    public static void main(String[] args){
        int port = 8080;
        if(args != null && args.length > 0){
            try{
                port = Integer.valueOf(args[0]);
            }catch (NumberFormatException e){
                //采用默认值
            }
        }
        try {
            new TimeClient().connect(port, "127.0.0.1");
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
